Camera gluing image enhancement and detection method based on AI technology

An image enhancement and detection method technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of maintaining the same gray value, changing the gray value, etc., to achieve the effect of improving contrast and reducing sample data

Active Publication Date: 2020-05-19
SHANTOU UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

It can solve the problem that the existing image enhancement methods often change the gray value of the entire image, and it is impossible to only enhance the area of ​​interest while keeping the gray value of other areas unchanged.

Method used

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  • Camera gluing image enhancement and detection method based on AI technology
  • Camera gluing image enhancement and detection method based on AI technology
  • Camera gluing image enhancement and detection method based on AI technology

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Embodiment Construction

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] An AI technology-based camera glue image enhancement and detection method according to an embodiment of the present invention is implemented through the following steps.

[0020] Approximately 100 full-scale glued images were acquired with an industrial camera as raw unprocessed samples.

[0021] 1. Use the image processing software Halcon to locate the center of the part and generate a fan-shaped area. Divide the glue area in a complete glued image into 20 sub-images. The sub-images are also used to make a sample set, and the sample data is expanded by 7 times by rotating and mirroring, which is used to train the VGG16 model and the cycleGAN model. The specific methods are as follows: (1) Rotate the sub-image by 90°, 180° and 270° respectively; (2) Mir...

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Abstract

An embodiment of the invention discloses a camera gluing image enhancement and detection method based on an AI technology. The camera gluing image enhancement and detection method comprises the following steps of: step 1, dividing a glue region in a complete gluing image into 20 sub-images; step 2, dividing the 20 sub-images into high-contrast images and low-contrast images by using a VGG16 model;step 3, enhancing the low-contrast images into high-contrast images by using a cycleGAN model; step 4, carrying out image splicing, and using threshold segmentation and edge detection to extract thecontour of the glue; step 5, and judging whether the gluing quality is qualified or not. The camera gluing image enhancement and detection method has an obvious enhancement effect on the low-contrastpart in the glue region of the gluing image, and can improve the gray value difference between the glue and the background from about 20 to about 55 under the condition of ensuring that the backgroundis basically unchanged. The camera gluing image enhancement and detection method greatly reduces the image processing difficulty, improves the visual detection precision, and is further suitable forenhancement and detection of other low-contrast images.

Description

technical field [0001] The invention relates to the fields of image processing and industrial detection, in particular to a method for enhancing and detecting a glued image of a camera based on AI technology. Background technique [0002] During the assembly process of the vehicle camera, Active Alignment (AA) focusing is one of the key processes affecting the imaging quality of the camera. In the AA focusing process, the adjustment of the relative position between the lens and the front cover with the image sensor is in a completely free state. By adjusting the horizontal position, vertical position and tilt angle of the lens relative to the image sensor, the camera can image to achieve the clearest state. Before AA focusing, a circle of ultraviolet curing (Ultraviolet Rays, UV) glue will be applied between the front cover and the lens for bonding and sealing. When the amount of glue is large, the glue may drip and contaminate the image sensor. When the amount is small, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/00G06T7/60G06T3/60G06K9/62G06N3/04G06N3/08
CPCG06T5/001G06T7/0004G06T7/60G06T3/60G06N3/08G06T2207/10004G06T2207/20081G06T2207/20084G06T2207/30108G06N3/047G06N3/045G06F18/2415G06F18/241Y02P90/30
Inventor 张兴伟谢凌望廖智豪李洁刘麒昊
Owner SHANTOU UNIV
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